Egg Allergy

He vomitted after his dinner, which i included 1/4 of an organic eggyolk in his porridge... :(

This is the 2nd time i tried him on egg yolk, the 1st time was 17th Aug. He had the same reaction: vomit in "merlion" style.

I am rather sad that he had such adverse impact on egg yolk, coz eggs are both ben and my favourite. I reckon he is really allergy to it as he shows the 3 signs of allergy:

1) vomit
2) bee-hive rashes
3) wheezing

Here are some egg allergy info i found on net:

About Egg Allergy
Eggs in themselves aren't bad, but when someone is allergic to them, the body thinks they are. When a person is allergic to eggs, the body's immune system overreacts to proteins in the egg. So every time something made with eggs enters the digestive system, the body thinks that these proteins are harmful invaders.

The immune system responds by creating specific antibodies to that food, which are designed to fight off the "invader." These antibodies — called immunoglobulin E (IgE) — trigger the release of certain chemicals into the body, one of which is histamine.

So when a child with an egg allergy eats a food that contains eggs, the immune system unleashes an army of chemicals to protect the body. The release of these chemicals can affect the respiratory system, gastrointestinal tract, skin, and the cardiovascular system — causing allergy symptoms like wheezing, nausea, headache, stomachache, and itchy hives.

Most people who are allergic react to the proteins in egg whites, but some can't tolerate proteins in the yolk. Egg allergy usually first appears when kids are very young, and most kids outgrow it by the time they're 5 years old.

Egg allergy is like most food allergy reactions: It usually happens within minutes to hours after eating eggs. Most reactions last less than a day and may affect these three body systems:
the skin: in the form of red, bumpy rashes (hives), eczema, or redness and swelling around the mouth
the gastrointestinal tract: in the form of belly cramps, diarrhea, nausea, or vomiting
the respiratory tract: symptoms can range from a runny nose, itchy, watery eyes, and sneezing to the triggering of asthma with coughing and wheezing

Most kids with egg allergy have some of the reactions listed above, but a few may have a very strong reaction called anaphylaxis. This severe allergic reaction causes swelling of the mouth, throat, and airways leading to the lungs, resulting in breathing difficulty. In addition, there is a dangerous drop in blood pressure, which can make a child dizzy or pass out, and may quickly lead to shock.
For kids who are especially sensitive to eggs, even egg fumes or getting egg on the skin can cause an anaphylactic reaction, so eggs should be kept out of the house completely.

Diagnosing an Egg Allergy
If your doctor suspects your child might have an egg allergy, he or she will probably refer you to an allergist or allergy specialist for further testing. The allergy specialist will ask things like how often your child has the reaction, the time it takes between eating a particular food and the start of the symptoms, and whether any other family members have allergies or conditions like eczema and asthma.

The allergy specialist may perform a skin test. This test involves placing liquid extracts of egg protein on a child's forearm or back, pricking the skin a tiny bit, and waiting to see if a reddish, raised spot forms, indicating an allergic reaction.

Your child may need to stop taking anti-allergy medications (such as over-the-counter antihistamines) 2 to 3 days before the skin test because they can interfere with the results. Most cold medications as well as some antidepressants may also affect skin testing. Check with the allergist's office if you're unsure about what medications need to be stopped and for how long.
Some doctors may also take a blood sample and send it to a lab where it will be mixed with some of the suspected allergen and checked for IgE antibodies.
In some cases, however, positive results of skin and blood tests aren't enough to prove that symptoms are definitely being caused by eggs. So doctors may use what's called a food challenge to help diagnose the allergy.

With a food challenge, the person is told to not eat eggs or anything made with egg proteins for a certain period of time — usually a few weeks. After that, the person will eat foods that contain eggs only under close supervision from a doctor. If symptoms come back after eating egg products, it's likely the person has an egg allergy.

Treatment
Treating egg allergy might seem simple — just make sure your child doesn't eat eggs. But so many foods are made with eggs and egg products that it can be really hard to know what's OK and not OK to eat. Consider working with a registered dietitian to develop an eating plan that provides all the nutrients your child needs while avoiding things made with eggs.
If your child has a severe egg allergy — or any kind of serious allergy — your doctor may want you to carry a shot of epinephrine with you in case of an emergency. Epinephrine comes in an easy-to-carry container about the size of a large marker. It's easy to use — the doctor will show you how to give a shot to your child should you ever need to.

If your child accidentally eats something with egg in it and starts having serious allergic symptoms, like swelling inside the mouth, chest pain, or difficulty breathing, give the shot right away to counteract the reaction while you wait for medical help. Always call for emergency help (911) if your child has needed to use epinephrine. Besides keeping epinephrine in your home, briefcase or purse, also be sure it's at relatives' homes and your child's day care or school.

We will bring him to visit his PD when we back to Singapore. I seriously hope he will outgrow this allergy soon...